Autonomous System
AS18728 — ISINJ - Instructional Systems Inc.(US)
Last fetched
AS18728 is an Autonomous System operated by ISINJ - Instructional Systems Inc. and registered in US. As of Sun, 06 Sep 2026 16:16:25 GMT, it announces 1 routed IP prefix and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS18728 announces 1 distinct routed prefix. The 1-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
Peering ecosystem
1 distinct peers via BGP. The first 1 are listed below.
| Peer ASN | Operator | Country |
|---|---|---|
| AS54004 | LIGHTPATH - Cablevision Lightpath LLC | US |
Blast radius
Count of dependent hostnames if AS18728 disappeared from the routing table.
75 hostnames depend on this network.Exact count across all 1 announced prefixes. Snapshot Fri, 12 Jun 2026 14:00:44 GMT.
MOAS / hijack watch
Prefixes routed by AS18728 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.
No active MOAS conflicts. Every prefix announced by AS18728 is unique to AS18728 in the current routing snapshot.
Threat posture
Related pages
Pivot deeper into the graph from AS18728.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS18728"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS countryOr query Whisper from your own LLM workflow via the Whisper MCP server.